The Maybrook Line was a line of the New York, New Haven and Hartford Railroad which connected with its Waterbury Branch in Derby, Connecticut, and its Maybrook Yard in Maybrook, New York, where it interchanged with other carriers. It was the main east-west freight route of the New Haven until its merger with the Penn Central in 1969.

The New York and New England Railroad (NY&NE) was a railroad connecting southern New York State with Hartford, Connecticut; Providence, Rhode Island; and Boston, Massachusetts. It operated under that name from 1873 to 1893. Prior to 1873 it was known as the Boston, Hartford and Erie Railroad, which had been formed from several smaller railroads that dated back to 1846. After a bankruptcy in 1893, the NY&NE was reorganized and briefly operated as the New England Railroad before being leased to the competing New York, New Haven and Hartford Railroad in 1898.